Medical authorities state that expired medicine is safe to take, even those that expired years ago. It's true the effectiveness of a drug may decrease over time, but much of the original potency still remains even a decade after the expiration date.
What medications become toxic after expiration?
Practically speaking, Hall said there is a handful of drugs known to degrade quite quickly, such as nitroglycerin tablets, insulin and tetracycline, an antibiotic that may become toxic to the kidneys after it expires.Oct 24, 2018